本文主要研究了高阶耦合微分方程的周期解以及伪周期解的存在唯一性问题.众所周知,高阶耦合微分动力系统在众多领域有着广泛的应用......

On the assumption that the Cauchy problem for incomplete second order abstract differential equation (u″(t)=Au(t), -∞＜t......